dubbo启动提示端口号已经被占用_dubbo 端口被占用问题

本地dubbo项目启动提示：

java.lang.IllegalStateException: Failed to load ApplicationContext

    at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:132)
    at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:123)
    at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:190)
    at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:132)
    at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:244)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:227)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:289)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:291)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:246)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
    at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: com.alibaba.dubbo.rpc.RpcException: Fail to start server(url: dubbo://192.168.8.2:20880/geex.fundApply.service.front.FrontVCardApplyService?anyhost=true&application=geex-apply-hrj&bind.ip=192.168.8.2&bind.port=20880&channel.readonly.sent=true&codec=dubbo&dubbo=2.6.0&generic=false&group=HRJ31&heartbeat=60000&interface=geex.fundApply.service.front.FrontVCardApplyService&logger=slf4j&methods=apply,creditResultQuery,applyResultQuery,applyAuditResultQuery&owner=vector&pid=8012&retries=0&revision=2.6.7&side=provider&timeout=120000×tamp=1698027152346) Failed to bind NettyServer on /192.168.8.2:20880, cause: Failed to bind to: /0.0.0.0:20880
    at com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol.createServer(DubboProtocol.java:277)
    at com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol.openServer(DubboProtocol.java:254)
    at com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol.export(DubboProtocol.java:241)
    at com.alibaba.dubbo.rpc.protocol.ProtocolListenerWrapper.export(ProtocolListenerWrapper.java:68)
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper.export(ProtocolFilterWrapper.java:93)
    at com.alibaba.dubbo.rpc.Protocol$Adaptive.export(Protocol$Adaptive.java)
    at com.alibaba.dubbo.registry.integration.RegistryProtocol.doLocalExport(RegistryProtocol.java:181)
    at com.alibaba.dubbo.registry.integration.RegistryProtocol.export(RegistryProtocol.java:121)
    at com.alibaba.dubbo.rpc.protocol.ProtocolListenerWrapper.export(ProtocolListenerWrapper.java:66)
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper.export(ProtocolFilterWrapper.java:91)
    at com.alibaba.dubbo.rpc.Protocol$Adaptive.export(Protocol$Adaptive.java)
    at com.alibaba.dubbo.config.ServiceConfig.doExportUrlsFor1Protocol(ServiceConfig.java:505)
    at com.alibaba.dubbo.config.ServiceConfig.doExportUrls(ServiceConfig.java:357)
    at com.alibaba.dubbo.config.ServiceConfig.doExport(ServiceConfig.java:316)
    at com.alibaba.dubbo.config.ServiceConfig.export(ServiceConfig.java:215)
    at com.alibaba.dubbo.config.spring.ServiceBean.onApplicationEvent(ServiceBean.java:121)
    at com.alibaba.dubbo.config.spring.ServiceBean.onApplicationEvent(ServiceBean.java:50)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
    at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:404)
    at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:361)
    at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:898)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:554)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
    at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:120)
    at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:99)
    at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124)
    ... 24 more
Caused by: com.alibaba.dubbo.remoting.RemotingException: Failed to bind NettyServer on /192.168.8.2:20880, cause: Failed to bind to: /0.0.0.0:20880
    at com.alibaba.dubbo.remoting.transport.AbstractServer.<init>(AbstractServer.java:68)
    at com.alibaba.dubbo.remoting.transport.netty.NettyServer.<init>(NettyServer.java:61)
    at com.alibaba.dubbo.remoting.transport.netty.NettyTransporter.bind(NettyTransporter.java:31)
    at com.alibaba.dubbo.remoting.Transporter$Adaptive.bind(Transporter$Adaptive.java)
    at com.alibaba.dubbo.remoting.Transporters.bind(Transporters.java:56)
    at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchanger.bind(HeaderExchanger.java:42)
    at com.alibaba.dubbo.remoting.exchange.Exchangers.bind(Exchangers.java:70)
    at com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol.createServer(DubboProtocol.java:275)
    ... 54 more
Caused by: org.jboss.netty.channel.ChannelException: Failed to bind to: /0.0.0.0:20880
    at org.jboss.netty.bootstrap.ServerBootstrap.bind(ServerBootstrap.java:303)
    at com.alibaba.dubbo.remoting.transport.netty.NettyServer.doOpen(NettyServer.java:92)
    at com.alibaba.dubbo.remoting.transport.AbstractServer.<init>(AbstractServer.java:63)
    ... 61 more
Caused by: java.net.BindException: Address already in use: bind
    at sun.nio.ch.Net.bind0(Native Method)
    at sun.nio.ch.Net.bind(Net.java:433)
    at sun.nio.ch.Net.bind(Net.java:425)
    at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
    at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
    at org.jboss.netty.channel.socket.nio.NioServerSocketPipelineSink.bind(NioServerSocketPipelineSink.java:148)
    at org.jboss.netty.channel.socket.nio.NioServerSocketPipelineSink.handleServerSocket(NioServerSocketPipelineSink.java:100)
    at org.jboss.netty.channel.socket.nio.NioServerSocketPipelineSink.eventSunk(NioServerSocketPipelineSink.java:74)
    at org.jboss.netty.channel.Channels.bind(Channels.java:468)
    at org.jboss.netty.channel.AbstractChannel.bind(AbstractChannel.java:192)
    at org.jboss.netty.bootstrap.ServerBootstrap$Binder.channelOpen(ServerBootstrap.java:348)
    at org.jboss.netty.channel.Channels.fireChannelOpen(Channels.java:176)
    at org.jboss.netty.channel.socket.nio.NioServerSocketChannel.<init>(NioServerSocketChannel.java:85)
    at org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory.newChannel(NioServerSocketChannelFactory.java:142)
    at org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory.newChannel(NioServerSocketChannelFactory.java:90)
    at org.jboss.netty.bootstrap.ServerBootstrap.bind(ServerBootstrap.java:282)
    ... 63 more

是因为20880端口号已经被占用了，所以只要关闭该端口号重启dubbo服务即可。

1.Win+R键输入cmd,输入 netstat -ano |finstr 20880 找到对应的进程号

2.强制杀死进程：taskkill /f /t /im 进程号

3.重新启动dubbo服务即可。